What is critical to improving flow?

Reducing the batch sizes of work is critical to improving flow, as it enables faster delivery of value, lower risk, higher quality, and better feedback1. Batch size is the amount of work that moves as a unit through the value stream2. Smaller batches reduce the cycle time, the total time from the beginning to the end of the process to provide value to a customer3. Smaller batches also reduce the variability and uncertainty in the system, leading to less waste and rework2. SAFe provides several practices to reduce the batch sizes of work, such as using User Stories, Features, and Minimum Viable Products (MVPs) as units of work, applying Continuous Integration (CI) and Continuous Delivery (CD) pipelines, and limiting Work in Process (WIP)1. References: Accelerating Flow with SAFe, Make Value Flow without Interruptions, Optimize Flow